Inventor · disambiguated record
Charles H. Perkins
Also filed as: PERKINS CHARLES · PERKINS CHARLES H
8 granted patents·1 pending application·173 citations·filing 1974–2023
87Inventor score
Top patents by PatentIndex Score
9 records- 0193US3948441ATime variable thermostatROBERTSHAW CONTROLS CO·Filed 1974·Granted Apr 6, 1976·78 cites·6 claims
- 0278US3994335AMultizone air conditioning systemROBERTSHAW CONTROLS CO·Filed 1975·Granted Nov 30, 1976·30 cites·3 claims
- 0373US4089222ATemperature telemetry for a settable cooking probeROBERTSHAW CONTROLS CO·Filed 1976·Granted May 16, 1978·27 cites·11 claims
- 0458US2023364393A1Expandable sheath and liner thereforABIOMED INC·Filed 2023·Application pending·0 cites
- 0554US4027700AReversing valve constructionROBERTSHAW CONTROLS CO·Filed 1976·Granted Jun 7, 1977·17 cites·7 claims
- 0650US4055056AReversible refrigerant system and four-way reversing valve therefor or the likeROBERTSHAW CONTROLS CO·Filed 1976·Granted Oct 25, 1977·15 cites·8 claims
- 0734US4042964AMotor protection circuitROBERTSHAW CONTROLS CO·Filed 1975·Granted Aug 16, 1977·4 cites·9 claims
- 0831US3972347AReversible refrigerant system and four-way reversing valve therefor or the likeROBERTSHAW CONTROLS CO·Filed 1974·Granted Aug 3, 1976·2 cites·12 claims
- 0928US4071018ASolar heat collector system, parts therefor and methodsROBERTSHAW CONTROLS CO·Filed 1976·Granted Jan 31, 1978·0 cites·40 claims
Join the waitlist — get patent alerts
Get an alert when Charles H. Perkins files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →